Daikin Super Multi NX 3MKS50E3V1B, Руководство по обслуживанию

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Troubleshooting for RA Indoor Unit - FTXG, FTXS, CTXS, FVXG, FVXS, FLXS, FDXS Series SiBE121135
280 Service Diagnosis
5.5 Thermistor or Related Abnormality (RA Indoor Unit)
Remote
Controller
Display
C4
,
C9
,
CE
Method of
Malfunction
Detection The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation.
Supposed
Causes Disconnection of connector
Defective thermistor
Defective indoor unit PCB
Troubleshooting
Check No.01
Refer to P.325
C4
: Indoor heat exchanger thermistor
C9
: Room temperature thermistor
CE
: Radiant panel thermistor (FVXG series only)
YES
(R15717)
NO
YES
NO
Caution
Correct the connection.
Replace the thermistor.
(Replace the indoor unit PCB.)
Replace the indoor unit PCB.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the connection of
connectors.
Normal?
Check No. 01
Check the thermistor resistance
value.
Normal?